Allowable Bearing Capacity of Shallow Foundations on Geogrid-Reinforced Sand

Few studies have been carried out on the bearing capacity of soils for crawler cranes. Directly applying the bearing capacity equations used for shallow foundations to cranes often leads to conservative design. The total settlement is of less concern for cranes than for buildings, and cranes can normally tolerate larger differential settlements. Computer simulation and field studies have been carried out to study the allowable bearing capacity of soils for cranes. Equations modified from the traditional method to calculate the bearing capacity for shallow foundations have been proposed. In general, it was found that the bearing capacity for crawler cranes could be increased by as much as 50% from that for foundations. This depends on the soil type, crane, and mat configuration. A design procedure in evaluating foundation support for crawler cranes is also proposed.

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Innovative Technique to Predict the Allowable Bearing Capacity for Shallow Foundations Based on Small-Strain Stiffness

Tunneling and Underground Construction ◽

10.1061/9780784413449.044 ◽

2014 ◽

Author(s):

Abdolhosein Haddad ◽

Reza Amini Ahidashti

Keyword(s):

Bearing Capacity ◽

Small Strain ◽

Shallow Foundations ◽

Small Strain Stiffness ◽

Innovative Technique ◽

Allowable Bearing Capacity

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A Framework to Predict the Load-Settlement Behavior of Shallow Foundations in a Range of Soils from Silty Clays to Sands using CPT Records

10.21203/rs.3.rs-697719/v1 ◽

2021 ◽

Author(s):

Hossein MolaAbasi ◽

Aghileh Khajeh ◽

REZA JAMSHIDI CHENARI ◽

Meghdad Payan

Keyword(s):

Bearing Capacity ◽

Volterra Series ◽

Current Model ◽

Shallow Foundations ◽

Hyperbolic Function ◽

Cone Penetration ◽

Settlement Behavior ◽

Tip Resistance ◽

Allowable Bearing Capacity ◽

Load Tests

Abstract Using a set of cone penetration test (CPT) records,the current paper develops a general framework based on regression analyses to model the load-settlement (q-s) behavior of shallow foundations resting on a variety of soils ranging from silty clays to sands.A three-parameter hyperbolic function is employed to rigorously examine the obtainedq-s curves, and to determine the model parameters.Also, the results of someCPT soundings, including the corrected cone tip resistance (qt) and the skin friction (Rf),are adopted to predict the results of plate load tests(PLT). The findingscorroborate the high accuracy of the proposed model, thereasonable performance of the hyperbolic function and the use of the Volterra series to predict the q-s curves.Moreover, the obtained curves from the newly developed model arecompared to those from other methods in the literature which cross-confirms the efficacyof the current model. Asensitivity analysis isalso conductedand the exclusive effects of all the contributing parameters are assessed among which Rfis shown to be the most influential. Ultimately, simple solutionsare adoptedto determine variouskey geotechnical parameters, like the ultimate bearing capacity (qult), the allowable bearing capacity (qa) andthe modulus of subgrade reaction (ks).

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Laboratory Studies on Bearing Capacity of Strip Interfering Shallow Foundations Supported by Geogrid-Reinforced Sand

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.472-475.1856 ◽

2012 ◽

Vol 472-475 ◽

pp. 1856-1869 ◽

Cited By ~ 4

Author(s):

S. M Marandi ◽

H Javdanian

Keyword(s):

Bearing Capacity ◽

Factor Model ◽

Experimental Tests ◽

Shallow Foundations ◽

Geometrical Parameters ◽

Laboratory Studies ◽

Interference Factor ◽

Reinforced Sand ◽

Design Charts ◽

Earth Structures

Abstract: In recent years, geosynthetics are used and considered by many scientists for various earth structures. This is due to their good performance and ease of execution. Many researchers carried out extensive studies on the behavior properties of geosynthetics. However, much attention has not been given to detailed studies and investigation on bearing capacity of interfering shallow-foundations supported by geogrid reinforced sand. In this research, a series of experimental tests was carried out on the effects of geometrical parameters on bearing capacity of interfering shallow foundations supported by geogrid reinforced sand. A numerical model and design charts were introduced to predict bearing capacity. The results showed that the bearing capacity increased using geogrid reinforcement and a good correlation exists between the model and the conventional theoretical relations. Also, the main parameters affecting on the values of the interference factor were the footing distance (s/B) and the number of reinforcement layers (N). However, the suggested interference factor model had an effective reflection on the calculated bearing capacities of the footings.

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A closed-form probabilistic solution for evaluating the bearing capacity of shallow foundations

Canadian Geotechnical Journal ◽

10.1139/t90-067 ◽

1990 ◽

Vol 27 (4) ◽

pp. 526-529 ◽

Cited By ~ 8

Author(s):

C. Cherubini

Keyword(s):

Bearing Capacity ◽

Closed Form ◽

Closed Form Solution ◽

Friction Angle ◽

Form Solution ◽

Shallow Foundations ◽

Shallow Foundation ◽

Probabilistic Evaluation ◽

Allowable Bearing Capacity ◽

Probabilistic Solution

A closed-form solution for the probabilistic evaluation of shallow foundation bearing capacity according to the model proposed by Terzaghi, as modified by Krizek, is described. A numerical example explains the method of computation. Key words: statistics, probability, ultimate bearing capacity, allowable bearing capacity, shallow foundations, friction angle, numerical methods.

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